Deep Submillimeter Observations of Two Lyα‐emitting Galaxies at<i>z</i>∼ 6.5
Bibliographic record
Abstract
We present deep submillimeter imaging of two spectroscopically confirmed z ~ 6.5 Lyα emitters (LAEs) in the Subaru Deep Field. Although we reach the nominal confusion limit at 850 μm, neither LAE is detected at 850 or 450 μm; thus, we conclude that the LAEs do not contain large dust masses (<2.3 × 10 8 and <5.7 × 10 8 M ☉ ). The limit on their average L FIR / L UV ratios (≲35) is substantially lower than seen for most submillimeter-selected galaxies at z ~ 3 and is within the range of values exhibited by Lyman break galaxies. We place upper limits on their individual star formation rates of ≲248 and ≲613 M ☉ yr -1 , and on the cosmic star formation rate density of the z ~ 6.5 LAE population of ≲5.0 × 10 -2 M ☉ yr -1 Mpc -3 . In the two submillimeter pointings, we also serendipitously detect seven sources at 850 μm that we estimate to lie at 1 < z < 5.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".